无限级分类,基本在全部的网站都有涉及,因此是必需要掌握的知识点,在网上看不少资料文档,要么不细致,要么根本不对,要么达不到预想的目标,其实实现的思路和方法很是简单,今天咱们一块儿来实现一下。php
这里直接使用artisan命令进行建立laravel
# -a 其实就是all,建立包含模型,控制器(资源),数据迁移文件(工厂模型、seed) php artisan make:model -a Category
运行这条命令,就能够建立好资源控制器。web
首先修改数据迁移文件xxx_create_categories_table.app
打开文件,修改里面的up方法,添加相应字段。less
Schema::create('categories', function (Blueprint $table) { $table->id(); $table->string('title', 100)->comment('分类名称'); $table->string('name', 100)->comment('分类标识'); $table->string('description', 255)->nullable()->comment('分类描述'); $table->integer('pid')->default(0)->comment('分类id'); $table->integer('level')->default(1)->comment('分类层级'); $table->integer('sort')->default(0)->comment('排序'); $table->integer('status')->default(1)->comment('状态:0-禁用,1-正常'); $table->timestamps(); });
php artisan migrate
//App\Models\Category.php public function categories() { return $this->hasMany(self::class, 'pid', 'id')->with('categories'); }
//app\Http\controllers\CategooryController.php # use模型 use App\Models\Category; public function index() { $categories = Category::with('categories')->where('pid', 0)->get(); return view('category.index', compact('categories')); }
在 routes/web.php,咱们添加如下内容:网站
Route::get('category', 'CategoryController@index');
这里使用递归渲染。this
在 resources/views/categories.blade.php 文件:spa
<table class="table table-borderless table-data3"> <thead> <tr> <th>编号</th> <th>分类名称</th> <th>分类标识</th> <th>分类描述</th> <th>建立时间</th> <th>状态</th> <th>操做</th> </tr> </thead> <tbody> @foreach ($categories as $category) <tr class="tr-shadow"> <td>{{ $category->id }}</td> <td>{{ $category->title }}</td> <td> <span class="block-email">{{ $category->name }}</span> </td> <td class="desc">{{ $category->description }}</td> <td>{{ $category->created_at }}</td> <td> <span class="status--process">{{ $category->status }}</span> </td> <td></td> </tr> <tr class="spacer"></tr> @foreach ($category->categories as $childCategory) @include('category.child_category', ['child_category' => $childCategory]) @endforeach @endforeach </tbody> </table>
递归部分加载自身模版child_category.blade.php.net
<tr class="tr-shadow"> <td>{{ $child_category->id }}</td> <td>|{{ str_repeat('--',$child_category->level-1) }} {{ $child_category->title }}</td> <td> <span class="block-email">{{ $child_category->name }}</span> </td> <td class="desc">{{ $child_category->description }}</td> <td>{{ $child_category->created_at }}</td> <td> <span class="status--process">{{ $child_category->status }}</span> </td> <td></td> </tr> <tr class="spacer"></tr> @if ($child_category->categories) @foreach ($child_category->categories as $childCategory) @include('category.child_category', ['child_category' => $childCategory]) @endforeach @endif
最后看一下效果
3d